input-raw: Don't require to have the EV_KEY event type
input-raw: Don't require to have the EV_KEY event type

We already didn't require to have BTN_TOUCH or BTN_LEFT because
multitouch type A and B can do without them. And since these are the
only EV_KEY event code we check, we obviously can remove the requirement
for the EV_KEY type.

Fixes #102

Signed-off-by: Martin Kepplinger <07ddf30bcca2a0d3056e54ffbfe155352a6af244@posteo.de>

kergoth/tslib,kergoth/tslib,kergoth/tslib,kergoth/tslib